Plenum spacer gives nowt.... fraid it does not. Mid range torque and bhp is improved, not only that, it paves the way forward for any other breather mods added, such as air induction and exhaust, so air in and air out. Mix the MREV2 with the Plenum spacer of course on the revup only and you gain 20+hp - it may only be 20hp but 20 is better than nothing and the sound and power increase is noticable. A number of people who get into my car notice it pulls a lot better than oem, a lot better!
People opt for the plenum spacer for it's simplicity, yes it's over priced, it's just a spacer, but for it's linking benefit it's not just a pointless mod.
I also agree with DannyBoy - the car is improved no end with additional bolt ons. I've never regreted any of my major mods from XYZ pioe, to ARC air induction, the MREV2 and so on. They contribute together and blend all those horses and torques to put a bloody great smile on my face. Yes it cost a fair amount, but at the end of the day I still get in my car and smile when I press the go pedal.
For all those people who have fitted their plenum spacer - question would you remove it? I promise you 95% would say no I wouldn't remove it.
Anyway - everyone is entitled to an opinion so as long as the car owner is happy so be it. We can't all like the same thing, apart from Berk HFC's!! (Bandwagon lol)